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Finding the Fourth Proportional to 624,528.36, 861,489.38 and 375,997.30

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Solution

The fourth proportional to 624,528.36, 861,489.38 and 375,997.30 is: 518,659.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,528.36 : 861,489.38 = 375,997.30 : x
  2. Step 2: Convert to fraction form
    624,528.36/861,489.38 = 375,997.30/x
  3. Step 3: Cross multiply
    624,528.36x = 861,489.38 × 375,997.30
  4. Step 4: Simplify right side
    624,528.36x = 323,917,679,644.94
  5. Step 5: Solve for x
    x = 323,917,679,644.94/624,528.36
  6. Step 6: Final answer
    x = 518,659.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.